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VulnerabilityCVE-2026-84631Published 2026-09-14

CVE-2026-84631 — Apple macOS

high

As of 2026-09-15, CVE-2026-84631 is a HIGH-severity vulnerability in Apple macOS, CVSS v3.1 7.8, EPSS 0.1% (3.5th percentile). Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-84631, most recently “Apple Ships 273-CVE Coordinated Security Update Across iOS 27, macOS, watchOS, tvOS, visionOS, Safari, and Xcode — Bundles a Previously KEV-Listed Pre-Auth Screen Sharing RCE”.

CVSS v3.1
7.8/10High
EPSS
0.1%Higher than 3.5% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
1Campaigns referencing it
Priority
4/10Threadlinqs triage score
Published
Updated 2026-09-15
CVSS v3.1 7.8 (HIGH) · EPSS 0.1% (higher than 3.5% of all scored CVEs) · Priority 4/10 · Published 2026-09-14

Last updated:

What is CVE-2026-84631?

This issue was addressed with additional entitlement checks. This issue is fixed in macOS Golden Gate 27. An app may be able to gain root privileges.

The record classifies CVE-2026-84631 under weakness class CWE-280. Its CVSS v3 base vector states that the flaw requires local access to the host, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality, integrity, availability. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 39 days ago.

Severity and exploitation probability

CVSS v3.1 base score
7.8 — HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (FIRST)
0.1% probability of exploitation in the next 30 days, higher than 3.5% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
4/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2026-09-14, last modified 2026-09-15

Is CVE-2026-84631 being exploited?

It currently carries a trending score of 29 in the Threadlinqs vulnerability feed.

Affected products and versions

How to fix CVE-2026-84631

No vendor patch reference has been recorded for CVE-2026-84631 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

Threat activity tracking CVE-2026-84631

1 tracked threat in the Threadlinqs corpus references CVE-2026-84631, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on .

Other references